Photographic photosensitive solution manufacturing method and apparatus.

摘要

A method and apparatus for manufacturing photographic photosensitive solution to produce crystals of silver halide emulsion having a uniform size and shape and without substantial waste of expensive Ag<+> solution. Flow control valves for controlling the flow rates of Ag<+> and X<-> solutions are controlled according to a predetermined flow rate or pAg potential program and using output signals of respective flow meters or a pAg potentiometer. The flow control valves are motor-controlled flow control valves for which the rate of change of flow rate with valve stroke is small and linear.